Commitments and Contingencies - (Details) - Aviation Litigation $ in Millions		1 Months Ended
	Apr. 01, 2016 plaintiff	Nov. 30, 2016 USD ($) defendant plaintiff
Contingencies [Abstract]
Number of plaintiffs		5
Number of defendants | defendant		6
Number of plaintiff deaths	3
Number of plaintiffs injured	6
Loss contingency, damages sought | $		$ 1.0